utility/Vec.h

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/**********************************************************************
** This program is part of 'MOOSE', the
** Messaging Object Oriented Simulation Environment.
**           Copyright (C) 2003-2013 Upinder S. Bhalla. and NCBS
** It is made available under the terms of the
** GNU Lesser General Public License version 2.1
** See the file COPYING.LIB for the full notice.
**********************************************************************/

#ifndef _VEC_H
#define _VEC_H

class Vec {
    public:
        Vec( double a0, double a1, double a2 );
        Vec()
            : a0_( 0.0 ), a1_( 0.0 ), a2_( 0.0 )
        {;}

        double length() const;

        double distance( const Vec& other ) const;

        double dotProduct( const Vec& other ) const;

        Vec crossProduct( const Vec& other ) const;

        void unitLength();

        void orthogonalAxes( Vec& u, Vec& v ) const;

        double a0() const {
                return a0_;
        }
        double a1() const {
                return a1_;
        }
        double a2() const {
                return a2_;
        }

        Vec pointOnLine( const Vec& end, double k );

        bool operator==( const Vec& other ) const;

        Vec operator-( const Vec& other ) const;

        Vec operator+( const Vec& other ) const;

        Vec operator*( const double& other ) const;

    private:
        double a0_; 
        double a1_;
        double a2_;
};

#endif // _VEC_H

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